product news/產ռ新聞
ExOne Installs 3-D Printer With New Binding Agent *打印机 的剂গ॰ֹ新ੇ،KT5^+
Te ExOne Company, North Huntingdon, Pennsylva-
nia, U.S., announced the first machine installation running with its new binder agent known as cold hardening phenol (CHP). Te 3-D printer was installed at the ACTech GmbH facility in Freiberg, Germany. ACTech is a leading global rapid prototyping company that designs and produces cast- ing prototypes and small batches for customers from various industries. Tis is the first 3-D printer in the world using this new class of phenolic binder, which can eliminate the curing process for cores and molds. As a result, ACTech now is able to provide prototypes of challenging parts much more quickly and cost effectively. Compared to traditional rapid prototyping procedures, this new technology enables the pro- duction of high strength molds and cores for sand castings, which until now were achievable only with laser sintering. CHP can accelerate the production process, reduce the
risk of rejection and decrease the consumption of resources. ACTech has years of experience in additive manufacturing, which made it a natural partner to collaborate with ExOne in the development of the cold 3-D phenolic printing process. Compared to the previously existing procedures, ACTech reduced the use of binder significantly, which reduces faulty parts caused by gas blockages. Additionally, by eliminating curing time, ACTech can now produce more challenging and fragile molds in less time and with a decreased reject rate. CHP combines advantages in productivity with high-
standard characteristics of the produced moldings. As a result, formative parts such as cores are now also suitable for iron and steel casting. Previously, this method was limited with conventional 3-D printing systems. ■
՛ҸKT5^+ङ顿廷х北州о尼法טآ国২йѹ 酚ਵ化ॆӒ是就Э（剂ৈড型新用҅Ֆ一আ，٢؛ 安机印۸* Ֆ这。੧运装安已וગ印۸* ).6）ङ Ҷ是՛ҸNIK:)'。՛ҸNIK:)'ङ格ાੀҀ国德֨装 球领үङ快速成型Ӳ造Ҹ՛，ՕО՟੧Џङ客户ગઋ 首Їउ世是这。սф量批شф生Ճљ型Խў铸ф生չ 砂ԾमՕ，机印۸* Ֆ采用新型酚醛树脂ডৈ剂ङ 更љלਈ՛ҸNIK:)' ，此֜。间时化ॆङ型砂չਯ Խў铸ङ性战挑Ӏ更ф生本成ङ势ѩ有更չچ速ङ快 型。ЊѮ统ङ快速Խ型生ф工ਫब比，这项新技术ਈ Ф此֨৲，ਯ砂չ型砂ङ高更چ强ф生ў铸型砂Оל ӹ，Ցਈ通过激Ұ烧ৈ工ਫੂ得。 Ӓॆ化ਵ酚).6Օљ加快ॆ化过३，降Ѻф生废 Ӳ材增֨՛ҸNIK:)'。ો浪ङ源资صӗ并险风ङս О成՛ҸNIK:)'得҅Э这，验经ङ年ך有已面方造 Ѫҁ合ङ然מֿ领术技印۸* 脂树醛酚֨՛ҸKT5^+ Ѵ。ЊФӹङ工ਫब比，'):KINҸ՛ডৈ剂ङ҅用 。ս废ङ生ф৲ऊ滞ѽ气֜дصӗ৲ђ，Ѻ降ੋ显量 љՕ֨现՛ҸNIK:)'，间时化ॆдصӗйं，י此 用更िङ时间生ф更Ӏ挑战性Ќ更তेङ铸型，Ќ降 Ѻд废ս率。 ，此֜。势ѩङ量ૅ高չ率效ӀӃ6.)酚ਵ化ॆӒ Ф此֨。ў钢铸չ铁铸й用适Э֨现ў部ङ型成ਯ砂
■ 。统系印۸* ӹ，此工ਫ方法ю限йѮ统ङ
Filters for Steel Castings Meet High Demands of Automotive Sector Steel castings can be sophisticated, high technology com-
ponents that are often important parts of complex assem- blies and systems. Te castings are used in many industries, including safety-critical components in railway applications, valves and pumps in energy uses and structural components for critical military applications. Te complexity and integrity of steel castings are rapidly
increasing, with market demand expected to increase. An example is the use of stainless steel castings in the high-end automotive industry for turbo charger housings and exhaust manifolds, which can operate at high temperatures on high efficiency engines. Ceramic foam filters were first used in the steel casting
industry toward the late 1980s, and the technology associated with steel filtration systems and application has continually improved. Now, ceramic foam filters are applied in a variety of components, from the smallest of components through to castings weighing in excess of 40 tons.
֗滤过件钢铸的求ੌ高Ўਸ਼ી汽ર满 ি装ু杂זОҁ常经，ў铸术技高ङإত是ў钢铸 括包，Џ੧ך很й用Օў铸п这。ў部要重ङ统系չ Ҽङֿ领用应工ӋՃљ，泵չ门阀ङוગ源ਈ、૨铁 键ৈ构铸ўঈҼ键安Ҷў。 ਚ一չ性杂זङў钢铸，高提断Љ求要ङ户客व随 ד֘Թ增轮涡Џ੧车汽端高й用，ײ҆。升提֨Э性 ङЈў条温高й用应Օ，ў铸钢锈Љङ管ح气排չѽ 高效Շ动机。 й用始开۵֘滤过瓷陶沫泡，ї年 फӱ 世纪 。进改续持֨用应Њ术技滤过ङ钢铸Ќ৲，Џ੧钢铸 ，Иў铸ङ样՟य़՟й用应已֘滤过瓷陶沫泡，֨现 。ў铸型םङ吨 过超չў铸ङش最括包 ：הױך很д来٫ф生ў铸Оਈ功要ПЗ ङ֘滤过
March 2016
FOUNDRY-PLANET.COM | MODERN CASTING | CHINA FOUNDRY ASSOCIATION | 71
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